cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A288270 E.g.f.: exp(Sum_{k>=1} (k-1)^2*x^k).

Table of values

n a(n)
0 1
1 0
2 2
3 24
4 228
5 2400
6 30360
7 453600
8 7702800
9 144910080
10 2981089440
11 66561264000
12 1603358729280
13 41434803970560
14 1142808612865920
15 33485770103385600
16 1038238875100627200
17 33945895488708403200
18 1166858228814204326400
19 42055660151648798054400

List of values

[1, 0, 2, 24, 228, 2400, 30360, 453600, 7702800, 144910080, 2981089440, 66561264000, 1603358729280, 41434803970560, 1142808612865920, 33485770103385600, 1038238875100627200, 33945895488708403200, 1166858228814204326400, 42055660151648798054400]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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